DIFF Main Group
E04C 5/00 Reinforcing elements, e.g. for concrete; Auxiliary elements therefor ( material composition C21, C22)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
CPC: Reinforcing elements, e.g. for concrete; Auxiliary elements therefor ( material composition C21, C22)
Full Title
Full titles differ between systems:
IPC:
Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
CPC:
Reinforcing elements, e.g. for concrete; Auxiliary elements therefor ( material composition C21, C22)
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- E04C 5/01 Reinforcing elements of metal, e.g. with non-structural coatings +2 CPC IPC+CPC Available in IPC and CPC
- E04C 5/07 Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal (metal elements with non-structural coatings E04C5/01) +1 CPC IPC+CPC Available in IPC and CPC
- E04C 5/08 Members specially adapted to be used in prestressed constructions +1 CPC IPC+CPC Available in IPC and CPC
- E04C 5/16 Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups ( tools connecting reinforcing elements E04G21/12) +3 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class E04,2013–2023, worldwide · Source: EPO PATSTAT
- CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 6,575
- ZHEJIANG YASHA DECORATION COMPANY 4,488
- SGCC(STATE GRID CORPORATION OF CHINA) 4,427
- CHINA CONSTRUCTION SECOND ENGINEERING BUREAU 4,352
- CHINA MCC17 GROUP COMPANY 3,122
- GOLD MANTIS FINE DECORATION TECHNOLOGY (SUZHOU) COMPANY 2,605
- SHENYANG JIANZHU UNIVERSITY 2,420
- CHINA CONSTRUCTION SEVENTH ENGINEERING DIVISION COMPANY 2,284
- CHINA CONSTRUCTION FIFTH ENGINEERING DIVISION CORPORATION 2,008
- CHINA CONSTRUCTION FIRST BUILDING (GROUP) CORPORATION 1,967
Top Applicants (CPC)
Class E04,2013–2023, worldwide · Source: EPO PATSTAT
- CHINA CONSTRUCTION EIGHTH ENGINEERING DIVISION 1,675
- CHINA MCC17 GROUP COMPANY 1,593
- ZHEJIANG YASHA DECORATION COMPANY 1,551
- SGCC(STATE GRID CORPORATION OF CHINA) 1,297
- GOLD MANTIS FINE DECORATION TECHNOLOGY (SUZHOU) COMPANY 1,212
- SHENYANG JIANZHU UNIVERSITY 926
- VAELINGE INNOVATION SE 901
- CHINA MCC5 GROUP CORPORATION 894
- VKR HOLDING DK 854
- SHANGHAI BAOYE GROUP CORPORATION 753